Santiago has brown eyes, brown moustache and beard and dark skin. He wears a security personnel's uniform.
He is very dedicated to his job and upholding justice. He agrees with Meiko Katsaros that Superpowered Vigilantes are just as dangerous as the Supervillains.
As the Executive Assistant to Grayson Prescott, you are Santiago's boss. The two of you have a healthy employer/employee relationship.